Classification of Ginsburg and Janvier 1975

Fm. Phocidae Gray 1821 [seal]
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G. †Palmidophoca Ginsburg and Janvier 1975
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†Palmidophoca callirhoe Ginsburg and Janvier 1975
G. †Phocanella Van Beneden 1876
G. †Pristiphoca Gervais 1853
Fm. †Squalodontidae Brandt 1873
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G. †Squalodon Grateloup 1840
Fm. Platanistidae Gray 1846
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G. †Hadrodelphis Kellogg 1966
Fm. Ziphiidae Gray 1850 [beaked whale]
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G. †Squalodelphis Dal Piaz 1917
Fm. Delphinidae Gray 1821 [dolphin]
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G. †Nannolithax Kellogg 1931
Fm. Physeteridae Gray 1821 [sperm whale]
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G. †Orycterocetus Leidy 1853
Fm. Cetotheriidae Brandt 1872
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G. †Cetotherium Brandt 1843
G. †Pelocetus Kellogg 1965
Fm. Dugongidae Gray 1821 [dugong]
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G. †Metaxytherium de Christol 1840
Superfm. Physeteroidea Gray 1868
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Tr. Ziphiina Gray 1850 [beaked whale]
Superfm. Delphinoidea Flower 1865
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Fm. †Acrodelphidae Abel 1905
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G. †Champsodelphis Gervais 1852
G. †Pomatodelphis Allen 1921
G. †Schizodelphis Gervais 1861